Mekong toxins risk Thailand’s food supply; Chiang Saen sits at the Mekong-Kok confluence—historic northern hub facing water-quality threats.
Heavy metal contaminants from unchecked upstream mining have entered the Mekong, imperiling millions who rely on the river for farming and fishing. Thailand bears the brunt, with downstream concerns spreading to Cambodia and Vietnam as officials monitor rising heavy-metal levels and communities adapt to changing livelihoods. This update highlights current impacts and local responses as cross-border pollution persists.